Program for search the number using binary search.

#include<stdio.h>

#include<conio.h>

main()

{

        clrscr();

                int i,f,l,n,mid,a[20],y;

                printf("\n Enter the sizre of array");

                scanf("%d",&n);

                printf("\n Enter the size of element \n");

                for(i=0;i<n;i++)

                scanf("%d",&a[i]);

                printf("\n Enter the no. to be search");

                scanf("%d",&y);

                f=1;

                l=n;

                mid=(f+l)/2;

                while(f<=l&&a[mid]!=y)

     {

                if(y>a[mid])

                f=mid+1;

                if(y<a[mid])

                l=mid-1;

     }

     if(y==a[mid])

     printf("\n no.is found at position %d",mid+1);

     else

     printf("\n no.is not found");

     getch();

     return 0;

 }